Patent · US Expired

All-wheel limited slip differential system in the power train of a motor vehicle

US4779487A · kind A · utility

7Cited by

10References

6Claims

0Family size

Assignee

Dr. Ing. h.c. F. Porsche AG · DE

Inventors

Hermann Pitsch · Wimsheim, DE
Klaus Gausrab · Esslingen am Neckar, DE
Robert Muller · Monsheim, DE

Key dates

Filing date	Mar 18, 1987
Grant date	Oct 25, 1988
Priority date	—
Expiry date	Mar 18, 2007

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2048/106
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An all-wheel limited slip differential system in the power train of the front axle and the rear axle of a motor vehicle has an intermediate planetary transmission in the direct through drive and a braking device that is engageable at its planetary carrier. A braking member is connected with the planetary carrier and the counterbraking member interacting with it is connected with the output shaft to the rear axle in a torsionally fixed manner. In order to keep the required braking moment and the braking device small, the ratio of the gear to the braking device is significantly higher than the ratio for the direct through drive.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.